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Rails where condition using NOT NIL
...Rails 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 and above adds where.not so you can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I prefer to leverage merge so that I...
Store query result in a variable using in PL/pgSQL
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201
I think you're looking for SELECT INTO:
select test_table.name into name from test_table where...
What character encoding should I use for a HTTP header?
...rset [ISO-8859-1], supporting other charsets only
through use of [RFC2047] encoding. In practice, most HTTP header
field values use only a subset of the US-ASCII charset [USASCII].
Newly defined header fields SHOULD limit their field values to
US-ASCII octets. A recipient SHOUL...
Why is 'this' a pointer and not a reference?
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180
When the language was first evolving, in early releases with real users, there were no reference...
How does one escape backslashes and forward slashes in VIM find/search?
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answered Mar 17 '10 at 19:19
CascabelCascabel
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What is “Linting”?
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1100
Linting is the process of running a program that will analyse code for potential errors.
See l...
What is the difference between 'content' and 'text'
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Gary KerrGary Kerr
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How do I remove deleted branch names from autocomplete?
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twalbergtwalberg
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Is there a performance difference between a for loop and a for-each loop?
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answered Nov 2 '08 at 12:47
Vijay DevVijay Dev
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How to set the maximum memory usage for JVM?
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answered Sep 29 '09 at 17:32
Prabhu RPrabhu R
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